名词
中文翻译：平均的
同义词：
['common', 'norm', 'standard']
例句：
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1. Theaverage temperature in winter is below freezing point.
冬天的平均温度低于冰点。
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2. The averageincome of a doctor is much higher thanthat of a lawyer.
医生的平均收入远高于律师。
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3. The average life expectancy for womenin their 50s is around80 years.
50岁女性的平均预期寿命约为80年。